Rename hivex/ -> lib/

[hivex.git] / lib / tools / visualizer_NT_time.ml

diff --git a/lib/tools/visualizer_NT_time.ml b/lib/tools/visualizer_NT_time.ml
new file mode 100644 (file)
index 0000000..a752112
--- /dev/null
+++ b/lib/tools/visualizer_NT_time.ml
@@ -0,0 +1,30 @@
+(* Windows Registry reverse-engineering tool.
+ * Copyright (C) 2010 Red Hat Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * For existing information on the registry format, please refer
+ * to the following documents.  Note they are both incomplete
+ * and inaccurate in some respects.
+ *)
+
+(* Convert an NT file timestamp to time_t.  See:
+ * http://blogs.msdn.com/oldnewthing/archive/2003/09/05/54806.aspx
+ * http://support.microsoft.com/kb/167296
+ *)
+let nt_to_time_t t =
+  let t = Int64.sub t 116444736000000000L in
+  let t = Int64.div t 10000000L in
+  Int64.to_float t